ScriptBasic is an interpreter for the old language BASIC. It runs on Win32 as
well as on UNIXes as a command-line or CGI program interpreter. It includes an
interpreter, a compilable, well-documented embedding and extending interface
for the C programmer, and a rich set of commands and functions.

GNU/Liberty Basic Compiler Collection (GLBCC) is a suite of tools that allow Liberty Basic source code to be compiled directly to executable programs. It leverages greatly off of the GNU Compiler Collection, which allows it to run both on Windows and Linux, while also having the ability to generate both Linux and Windows executables on Linux via the Mingw cross compiler. The suite also includes a frontend program that has both a GUI and CLI to provide a simple environment to compile Liberty Basic code.

The Adlib-S3M Player for QuickBasic contains an example program that implements a background Adlib-S3M/MidiS3M player. The player itself is fully written in QuickBASIC, and has been optimized for memory usage.

wsbasic is a BASIC interpreter written in C++
using recursive descent OO techniques instead of
the outdated lex/yacc tools. It can already be
used as a scripting replacement for bash and was
also used as basis for kturtle's logo interpreter.

PVRec is a simple applet written in Gambas that
takes an MPEG-2 stream from the pvrusb driver for
the Hauppauge WinTV PVR USB and allows you to
simultaneously view (using Mplayer) and record it.
You can start and stop recording independently of
viewing and vice versa.